Tag: M.W=100-200

In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 592-55-2 as follows. Recommanded Product: 1-Bromo-2-ethoxyethane

In a similar manner 1d was obtained from sodium (diglyme)2 3,4,5-triphenyl-1,2-diphosphacyclopentadienide (0.94 g, 1.52 mmol) and 1-bromo-2-ethoxyethane BrCH2CH2OEt (0.26 g, 1.90 mmol, 25% excess) as a light-yellow oil; yield 0.36 g (59%). 1H NMR (CDCl3): 0.59 (t, 3H, 3JHH = 6.9, 3), 1.42-1.47 (m, 2H, OCH2), 1.51-1.57 (m, 2H, OCH2), 1.88-1.93 (m, 2H, PCH2), 6.85 (d, 4H, 3JHH = 3.42), 6.90 (d, 2H, 3JHH = 7.34), 6.96 (d, 4H, 3JHH = 6.85), 6.99-7.07 (m, 1H, 3JHH = 5.38), 7.20 (d, 2H, 3JHH = 7.34), 7.29 (d, 2H, 3JHH = 5.87). 31P NMR (CDCl3): 51.9 (d, 1JPP = 407.3), 214.1 (d, 1JPP = 407.3). 13 NMR (CDCl3): 16.7 (s, CH3), 25.6 (s, CH2), 27.3 (d, 2JCP = 9.7, CH2), 37.8 (dd, 1JCP = 16.3, 2JCP = 5.8, CH2), 126.4 (s, p-Ph), 126.5 (s, p-Ph), 126.8 (s, p-Ph), 127.4 (s, m-Ph), 128.2 (s, m-Ph), 128.3 (s, m-Ph), 128.5 (s, o-Ph), 129.2 (s, o-Ph), 130.5 (d, 3JCP = 1.4, o-Ph), 131.7 (s, o-Ph), 133.5 (s, o-Ph), 137.6 (d, 3JCP = 6.2, ipso-Ph), 138.24 (dd, 3JCP = 10.4, 3JCP = 3.8, ipso-Ph), 142.8 (d, 3JCP = 9.8, ipso-Ph), 149.7 (ps.tr, 3JCP = 15.51, C4), 164.5 (dd, 1JCP = 7.3, 2JCP = 3.1, C5), 185.8 (dd, 1JCP = 47.1, 2JCP = 14.9, C3).

According to the analysis of related databases, 592-55-2, the application of this compound in the production field has become more and more popular.

Electric Literature of 102-52-3, A common heterocyclic compound, 102-52-3, name is 1,1,3,3-Tetramethoxypropane, molecular formula is C7H16O4, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

To a suspension of intermediate lId (1.834 g, 8.94 mmol) in EtOH (30 ml) were added malonaldehyde bis(dimethyl acetal) (1.63 ml, 9.84 mmol) and conc.HC1 (1 ml). The reaction mixture was stilTed at 70C for 2 hours. The cooled mixture was evaporated todryness, diluted saturated solution of NaHCO3 and extracted with EtOAc twice. The combined organics were washed with water, with saturated solution of NaC1, dried over MgSO4, filtered and evaporated. The final product was purified by silica gel chromatography using 0 to 30 % EtOAc/cyclohexane as eluent to give intermediate lie(1.380 g, 64%). ?H NMR (500 MHz, CDC13) oe 8.12 (d, J= 2.1 Hz, 1H), 7.94 (s, 1H), 7.85 (d, J= 8.3 Hz, 1H), 7.72 (d, J= 1.4 Hz, 1H), 7.40 (s, 1H), 7.36 (dd, J= 8.3, 1.8 Hz, 1H),7.32 (d, J= 1.7 Hz, 1H), 6.46-6.43 (m, 1H), 3.97 (s, 3H).

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 7252-83-7, name is 2-Bromo-1,1-dimethoxyethane, This compound has unique chemical properties. The synthetic route is as follows., SDS of cas: 7252-83-7

A solution of 6-chloro-1,2-diazinan-3-amine (10 g, 73.75 mmol, l.OOequiv), 2-bromo-1,1-dimethoxyethane (50 g, 295.83 mmol, 4.01 equiv), and HBr(40%, 45 mL) in ethanol (100 mL) was stirred overnight at 90 C. The majority of the ethanol was removed under reduced pressure then the pH value of the solution was adjusted to 10 with 5% aqueous potassium carbonate solution. The resulting mixture was extracted with 6×500 mL of ethyl acetate. The combined organic layers were dried over anhydrous sodium sulfate and concentrated under vacuum. The residue was purified on a silica gel column eluted with ethyl acetate/petroleum ether (1/2-1/1) to give 6,5 g (57%) of the title compound as a yellow solid. 1H NMR (300 MHz, CDCl3) delta 7.95 (s, 1 H), 7.91 (s, 1H), 7.80 (s, 1 H), 7.05 (d,.7 = 9.3 Hz, 1 H).

Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of 7252-83-7.

Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 22483-09-6, name is 2,2-Dimethoxyethanamine, This compound has unique chemical properties. The synthetic route is as follows., Application In Synthesis of 2,2-Dimethoxyethanamine

A solution of 2-thiophenecarboxaldehyde (Ig, 8.93mmol) and aminoacetaldehyde dimethylacetal (1.4g, 13.4mmol) in DCM (23OmL) was stirred at 350C for 1 h.Sodium triacetoxyborohydride (5.68g, 27mmol) was added and the reaction stirred at r.t. for 5 hours. NaHCO3 (saturated solution, 10OmL) was added and the organics were collected, washed (brine), dried (MgSO4) and concentrated in vacuo. The residue was purified via flash chromatography eluting with 50% EtOAc/isohexane to afford the title compound as a yellow oil. Yield 1.6g (90%): HPLC retention time, 2.76min (Solvent: CH3CN/H2O/0.05% NH3, 5-95% gradient H2O-6min. Column: EPO Xterra 50 x 4.60 i.d., Cl 8 reverse phase. Flow rate: 1.5mL/min.). Mass spectrum (ES+) m/z 202 (M + H).

Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of 22483-09-6.

Reference of 578-57-4, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 578-57-4, name is 1-Bromo-2-methoxybenzene belongs to ethers-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

General procedure: CuI (0.05 mmol), aryl halide (0.5 mmol), Na3PO4 (0.5 mmol), 25-28% aqueous ammonia (1 mL), and PEG-400 (2 mL) were added to a sealed tube. The reaction mixture was stirred at 100 C (aryl iodides for 15 h and aryl bromides for 24 h) and then cooled to room temperature and extracted with diethyl ether (3 times). The combined organic phase was then dried with anhydrous Na2SO4 and the solvent was removed under reduced pressure. The remaining residue was purified by column chromatography on silica gel to provide the desired aryl amines.

The synthetic route of 1-Bromo-2-methoxybenzene has been constantly updated, and we look forward to future research findings.

Electric Literature of 6851-80-5, These common heterocyclic compound, 6851-80-5, name is 1-(2-Methoxyphenyl)-N-methylmethanamine, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

General procedure: To a mixture of the corresponding secondary amines 14A-F (0.6 mmol), anhydrous K2CO3 (89.7 mg, 0.65 mmol) and KI (8.6 mg, 0.052 mmol) in anhydrous CH3CN (12 ml) were added the appropriate intermediates 10-13 (0.5 mmol). The reaction mixture was warmed to 60-65 C and stirred for 6-10 h under an argon atmosphere. After complete reaction, the solvent was evaporated under reduced pressure. The residue was dissolved in water (40 mL) and the mixture was extracted with dichloromethane (25 mL×3). The combined organic phases were washed with saturated aqueous sodium chloride (20 mL), dried over sodium sulfate, and filtered. The solvent was evaporated to dryness under reduced pressure. The residue was purified on a silica gel chromatography using mixtures of CH2Cl2/CH3OH (100:1) as eluent to afford the corresponding scutellarein-O-alkylamine derivatives 15-18.

The synthetic route of 6851-80-5 has been constantly updated, and we look forward to future research findings.

767-91-9, name is 2′-Methoxyphenyl acetylene, belongs to ethers-buliding-blocks compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. Recommanded Product: 2′-Methoxyphenyl acetylene

General procedure: General produce: o-iodophenol (0.5 mmol), alkyne (1.0 mmol) andbase (1.0 mmol) were added into a 10 mL dry Schlenk tube under Ar,then anhydrous DMF (5 mL) was injected into the mixture using syringe.Then the solution stirred at preheated oil bath (160 C). The reactionwas monitored by TLC and GC.The mixture was cooled down toroom temperature after full conversion, then diluted with dichloromethaneand washed with water three times. The organic layerwas separated and washed with brine followed by drying with anhydrousNa2SO4. The filtrate was concentrated in vacuo to afford thecrude product, which was purified by flash column chromatography onsilica gel (petroleum ether).

The synthetic route of 767-91-9 has been constantly updated, and we look forward to future research findings.

Synthetic Route of 150-78-7, In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 150-78-7 as follows.

General procedure: To a mixture of DITB (2, 517.7 mg, 1.10 mmol), oxone (681.0 mg, 1.11 mmol) in acetonitrile (4.5 mL) and HFIP (1.5 mL) was added 2-methoxynaphthalene (6c, 476.5 mg, 3.01 mmol), and the mixture was stirred for 24 h at 50 C. The reaction mixture was then diluted with ether and quenched with aqueous NaHCO3, and extracted with ether (15 mL x 3). The combined organic layers were washed with water (15 mL x 1), dried over Na2SO4, filtrated, and concentrated in vacuo. The residue was purified by silica gel column chromatography (eluent: hexane / chloroform = 5 / 1) to afford 1-bromo-2-methoxynaphthalene (7c, 578.5 mg, 81%) [S8].

According to the analysis of related databases, 150-78-7, the application of this compound in the production field has become more and more popular.

Synthetic Route of 101-84-8,Some common heterocyclic compound, 101-84-8, name is Diphenyl oxide, molecular formula is C12H10O, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

Example 12 (comparative)Decabromodiphenyl ether – Bromination of Deca completely dissolved in bromine.; The solubility of Deca in bromine was determined as 2.64 g Deca in 100 g bromine at 200C.To a 1 liter round bottomed flask equipped with a mechanical stirrer, a dropping funnel, a thermocouple and a reflux condenser was added 22 g of non milled Deca (content 97.1 %) and 1642 g bromine to produce a 1.32 % solution. AlBr3, 14.1 g, was added and the mixture was heated at reflux for 5 hours. After cooling to room temperature, water, 250 ml, was carefully added. The bromine was distilled and an additional 520 g of water was added. The solid was filtered and dried and consisted of 99.6 % Deca.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route Diphenyl oxide, its application will become more common.

Reference of 702-24-9, Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 702-24-9, name is 4-Methoxy-N-methylbenzylamine, This compound has unique chemical properties. The synthetic route is as follows.

A mixture of ethyl 8-bromo-6-chloroimidazo [1 ,2-b]pyridazine-3 -carboxylate (WO2009/100375) (5 g, 16.42 mmol), 1-(4-methoxyphenyl)-N-methylmethanamine (3.23 g,21.34 mmol), and N,N-diisopropylethylamine (5.74 ml, 32.8 mmol) in 1,4-dioxane (30 ml) was heated at 90 °C for 5 h. The volatiles were removed under vacuum. The residue was diluted with ethyl acetate (200 mL), washed with water (2 x 50 mL) and brine (50 mL), and dried over anhydrous Mg504. The desired product, ethyl 6-chloro-8-((4-methoxybenzyl)(methyl)amino)imidazo[ 1 ,2-b]pyridazine-3 -carboxylate (6.10 g, 16.27 mmol, 99 percent yield), was isolated as a pale yellow solid by ISCO (330 g silica gel, solid loading, 20-40percent ethyl acetate/hexane).

The chemical industry reduces the impact on the environment during synthesis 4-Methoxy-N-methylbenzylamine. I believe this compound will play a more active role in future production and life.